Oh, it wasn't any problem at all.

[Well he doesn't have to let her know yet. He sees that little smirk >:c]

I'll see you then. And maybe I'll even let you borrow the book you gave me, you might be needing it now that you've been gone.

[Because he can't not have the last jab in a conversation. But he doesn't give her the chance to retort again before he's hung up the call.]